search for: contourplot

Hi All, I want to add one point to contourplot().  I used contourplot() in my code like contourplot(z ~ a + b |c, data) I understand there is plot.axes argument for filled.contour(), but it  did not work for my code. I also tried plot() and text() for contourplot(), but got this error: "plot.new has not been called yet" Any suggestion...

Hi everybody, I want to do a contourplot in lattice with my raw data overlaid on it(xyplot) which seemed to be a very easy thing to do. I've tried it in many ways, but I haven't succeeded at obtaining it. let's say x, y, and z as the variables that comes from the data frame ''ex'': therefore my countourplot...

Hi - I have a dataframe with 4 variables - long, lat, temp and year. I would like to plot temperature by lat and long in contour plots by year. There are 391 data points. When I try contourplot(temp~long*lat|year,data=hake,cuts=10,labels = TRUE,contour = TRUE,pretty = TRUE,region=TRUE) I get plots with dots around by data, but not contour lines or filled in regions. I have also used the intrep function with image and contour which works fine, but I have to subset by data by year first...

Hi, Is there a way to plot more than one trend surface using the functions contourplot() and wireframe(). I have found an add=T in contour(), but no equivalent argument in contourplot() and wireframe()? I have taken the example 11-2 (pages 441-451) from Design and analysis of experiments (Montgomery 2001, 5th edition) to see if this could be done in R. I have managed to plot ind...

Hi, one of the nice things about contour is that it labels all contour lines. contourplot only labels each particular elevation a single time. i.e., if there are two contour lines corresponding to z = 45, it will only label one of them. is there a way to get contourplot to automatically label all the contour lines, even those that are repeated? i ask because i want to plot contour p...

Hello, A weird thing is happening to me. I have a 128x128 elements matrix m with values between 0 and 1. If I do: R> library(lattice) R> contourplot (m, cuts=9) I get the following error message: Error in validDetails.text(x) : Invalid 'rot' value The same for any cuts >9. I can plot m with contourplot(m, cuts=8) but this is not detailed enough. The 'normal' R image and contour commands work just fine so it seems there is no...

I'm working on a contourplot( ) graph, the subject of several previous posts to this list. The contours express probabilities from 0 - 1, but the key that is automatically generated by contourplot pads the probability scale with values that are impossible (i.e, range goes from -0.2 to 1.2), which will be confusing to those...

Hi, I was trying to stack a topographic map readed in from esri shapefile with a contour map and a vector map. However, the plotMap(maptools) and contourplot(lattice) do not seem to work well on top of each other. Here is part of my code. xrange<-range(225000:350000) yrange<-range(2685000:2810000) basemap <- read.shape("Twn25_town_dxf_Polygon.shp") plot.Map(basemap,xlim=xrange,ylim=yrange,fg=0,ol=8,xlab=&q...

...R("shape", layer="Export_Output_4") ## Project the shapefile to the UTM 16 zone proj4string(hello) <- CRS("+proj=utm +zone=16 +ellps=WGS84") ## Read Contour data mydata <- read.csv("mydata.csv") head(mydata ) summary(mydata) #Create a contourplot contourplot(Salinity ~ Eastings+Northings | Time, mydata, cuts=30,pretty=TRUE) Thank you so much. I would welcome any other ways to do this aside from contourplot and lattice. Best Regards, Janesh [[alternative HTML version deleted]]

If I have a contourplot (in the lattice package) and I want to add straight lines to it, how do I do this? I see that there are llines() and lsegement() functions for lattice plots, but they don't seem to do anything in this case: library(lattice) library(KernSmooth) x=rnorm(10000) y=x+rnorm(x,0,.5) a=bkde2D(cbind...

Sorry if I am cluttering up this list with too many rank beginner questions. But I *am* a rank beginner, and I am at my wit's end with this one: I have a data frame df, with components x,y,z. This command to make a contour plot with lattice graphics works just fine: > contourplot(z~x*y,data=df,cuts=20) Then I try > contourplot(z~x*y,data=df,cuts=20,region=T) And it dies on me with the error: Error in unit(x, default.units) : 'x' and 'units' must have length > 0 I have done maybe a hundred contour plots in this same exact way, and have never seen...

...mple: library(lattice) g <- expand.grid(x = 60:100, y = 1:25, ti = c("a","b","c")) g$z <-with(g, (-1e-4*x-1e-3*y-1e-5*x*y)*(ti=="a") + (1e-2*x-1e-3*y-1e-4*x*y)*(ti=="b") + (1e-3*x-1e-3*y-1.e-5*x*y)*(ti=="c") ) contourplot(z~ x * y|ti, data = g, cuts=20, pretty=T, screen = list(z = 30, x = -60)) As you can see in the figure, most of the contour lines are in one of the levels and we are not able to see how the other levels look like. I would like to display the same number of cuts...

Hi, I am gradually moving from the classical R plot functions to the library Lattice I have some questions about contourplot () and its arguments: 1/ I am working on geographical coordinates which makes necessary that the X (longitude) and Y (latitude) units be represented with the same distance on screen. This was obtained in the classical R plots with plot.default(x,y, asp=1,...) and then contour(..., add=T). When I...

I wish to have inward-pointing ticks on my contourplot graph, but the colored background produced by the "region=TRUE" statement covers the ticks up, is there any way around this? Sample code below. --Seth library(lattice) model <- function(a,b,c,d,e, f, X1,X2) # provide model function for contour plot {J <- a + (b*X1) +...

...i everyone, I am new to the list. My problem is to change the color of the label in a contour plot. The plot is quite dark and I'd like to have the line and label white, it works for the line with a simple "col", but for the labels I need to pass throught a panel call and : > contourplot(Prob ~ D.CSW * D.CS,data=grid,region=TRUE,col="white",panel=function(x,y,z,...){panel.contourplot(...,labels=list(col="white"),...)}) give me the answer "the argument 'label' may correspond to other variables" (I translate the error message from my french v...

Hello I'm using the following call to create a contourplot: library(lattice) m <- as.matrix(read.table("data.txt")) contourplot(m[,3] ~ m[,2] * -m[,1], at = c(1e-6, 1e-5, 1e-4, 1e-3, 1e-2, 1e-1), scales = list(x = list(log = 10, labels = c("1", "10", "100&quo...

...following loglikelihood-function # Log-Likelihood-Funktion loglik_jm<-function(N,phi,t) { n<-length(t) i<-seq(along=t) s1<-sum(log(N-(i-1))) s2<-phi*sum((N-(i-1))*t[i]) n*log(phi)+s1-s2 } # the data t<-c(7,11,8,10,15,22,20,25,28,35) # now i want to do a 3d-plot and a contourplot in order to see at which values of N and phi the loglikelihood function becomes zero. # i do this in order to get an idea where the starting values for a optimization for the mle of N could be # 3dplot and contourplot phi<-seq(0,1,length=50) N<-seq(101,110,length=50) z<-outer(N,phi,logl...

Friends: I wish to overlay data points on a contour graph. The following example produces a nice contour plot, but I have not mastered the concept of using panel functions to modify plots. Can someone show me how to overlay the data points (given after contour plot statement) on the contourplot? --Seth model <- function(a,b,c,X1,X2) # provide model function for contour plot {(exp(a + b*X1 + c*X2)) / (1 + exp(a + b*X1 + c*X2))} g <- expand.grid(X1 = seq(0.40, 0.8,0.01), X2 = seq(0.03,0.99,0.03)) # create gridded data for contour plot a <- -37.61...

...1 and there are both a tick mark and a number label at the X-axis values of 0.2,0.4,0.6. and 0.8. I want to add tick marks to the figure at every 0.1 value. This will help a viewer determine the values on the x axis. I included all of my code. I apologize but it is very long. I am created a contourplot figure that will be a jpg. I also included my notes after the # sign so you can see what I am doing. Any help would be greatly appreciated. jpeg(file="C:/Documents and Settings/Michael/My Documents/Mike/amberjack/Reefs_Model/YPRlevel.jpg", width=8,height=8, unit="in",...

...ur plots, 4 in all. The data is coming from a data frame named "nd.frame", which has elements "xdf", "ydf", "zdf", and "pndt". I am treating "pndt" as a factor, and it has four levels. I make a call to the lattice graphics routine "contourplot" like so: contourplot(zdf~xdf*ydf|factor(pndf),data=nd.frame) >From this I get a 2x2 grid of four contour plots. So far so good. The problem - a big problem in my situation - is that the arrangement is in the order 3 | 4 ------ 1 | 2 What I need is 1 | 2 ------...